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Sundareswaran Iyalunaidu

With over 24 years of dedicated experience, I am a seasoned professional specializing in the commissioning, maintenance, and installation of Electrical, Instrumentation and Control systems. My expertise extends across a spectrum of industries, including Power stations, Oil and Gas, Aluminium, Utilities, Steel and Continuous process industries. Tweet me @sundareshinfohe
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Procedures

Hydraulic System Pressure Switch Troubleshooting: Step by Step Safe Procedure

Table of ContentsWhat Is a Hydraulic Pressure Switch and How Does It Work?Hydraulic Pressure Switch Operating PrinciplePressure Switch Hysteresis. Set Point and Reset PointNormally Open and Normally Closed Pressure Switch ContactsHydraulic Pressure Switch vs Pressure TransmitterCommon Hydraulic Pressure Switch Problems and SymptomsPressure Switch Not...
Instrumentation Questions

Advanced PLC Interlock Troubleshooting Quiz for Process Industries | 25 Practical PLC Diagnostics Questions for Instrumentation and Automation Engineers

Why PLC Interlock Troubleshooting Matters in Modern Process Industries  Modern process industries depend on reliable PLC interlock systems to protect personnel, equipment, and production. Troubleshooting PLC interlocks requires strong knowledge of process control, field instrumentation, PLC diagnostics, permissive logic, shutdown sequences, and industrial automation practices....
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Instrumentation Calculators

Mass Flow Rate Converter : Convert kg/s, lb/min, SCFM, L/h and 50+ Units

Table of ContentsOnline Mass Flow Rate Converter for Industrial and HVAC ApplicationsUse the Free...
Instrumentation Questions

Advanced Flow Measurement Selection MCQs for EPC Instrumentation Design Engineers

Professional Flowmeter Selection Quiz for EPC Projects Advanced EPC instrumentation quiz covering flowmeter selection, sizing,...
Engineering Standards

IEC 60079-14 Explained: Complete Guide to Hazardous Area Installation for Instrumentation and Control Systems

Table of ContentsWhat is IEC 60079-14 and Why it is Critical For Hazardous Area...
Checklist

Impulse Line Inspection Step By Step Procedure For DP Transmitters

Table of ContentsWhat Is Impulse Line Inspection and Why It Is Critical for DP...
Engineering

Understanding Rangeability vs Turndown Ratio in Control Valve Sizing

Table of ContentsWhy This Distinction Matters for Instrumentation EngineersDefinitions: Rangeability vs Turndown Ratio in...
Instrumentation Calculators

Pressure Unit Converter – ISO and NIST Compliant Professional Calculator for Engineers

Instrumentation Questions

Troubleshooting Analog Output Signals in PLC Loops – Advanced Scenario-Based Quiz for Process Industries

Why Mastering PLC AO Signal Troubleshooting Matters in Process Plants Learn how to fix PLC...
Instrumentation

Edge AI Based Predictive Instrumentation Calibration and Health Monitoring for Process Plants

Table of ContentsWhy Edge AI Based Predictive Calibration Is the Latest Trend in Instrumentation...
Communication

Duplicate Modbus Address in Temperature Multiplexers Causes Plant Shutdown – Real Incident & Root Cause

Table of ContentsIncident Summary: 36 Temperature Tags Dropped to Zero and Alarm FloodingTimeline &...
Instrumentation Calculators

MIMO Decoupling Matrix Designer for Multivariable Process Control

MIMO Decoupling Matrix Designer /* =========================== DECORATED MIMO CALCULATOR WordPress Responsive...
Instrumentation

Live Signal Verification 4 to 20 mA Loop Standard Operating Procedure (SOP)

Table of ContentsPurpose: Live Signal Verification for 4-20 mA LoopsScope: Systems, Transmitters and ExclusionsSafety...
Instrumentation Questions

Advanced SIS Troubleshooting Quiz for Process Industries (25 MCQs with Answers)

SIS Troubleshooting Quiz Questions and Answers This quiz is for experienced safety, instrumentation, and SIS...
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Procedures

Hydraulic System Pressure Switch Troubleshooting: Step by Step Safe Procedure

Table of ContentsWhat Is a Hydraulic Pressure Switch and How Does It Work?Hydraulic Pressure...
Instrumentation Questions

Advanced PLC Interlock Troubleshooting Quiz for Process Industries | 25 Practical PLC Diagnostics Questions for Instrumentation and Automation Engineers

Why PLC Interlock Troubleshooting Matters in Modern Process Industries  Modern process industries depend on reliable...
Instrumentation Calculators

Capacitance Level Sensor Calculator: Calculate Liquid Level and Capacitance for Instrumentation Applications

Capacitance Level Sensor Calculator :root{ --bg:#F2F5F3; --panel:#FFFFFF; ...
SIS/ESD

How are ESD Signals Selected? Complete ESD Signal Selection Guide

Table of ContentsWhat Is an ESD Signal in an Emergency Shutdown System?Why Is ESD...